cfg80211: add cfg80211 exported function tracing

Also add tracing to the API functions that drivers
(and mac80211) can call in cfg80211.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 7fda94f..27941d5 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -62,6 +62,8 @@
 	struct cfg80211_event *ev;
 	unsigned long flags;
 
+	trace_cfg80211_ibss_joined(dev, bssid);
+
 	CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
 
 	ev = kzalloc(sizeof(*ev), gfp);